题目内容：
All theories,however,are tentative and are（ ）to criticism.
A.immune
B.resistant
C.sensitive
D.subject
参考答案：【答案仅供学习，请勿对照自行用药等】
答案解析：
选择题：All theories,however,are tentative and are（ ）to criticism.
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- 题目类型：选择题
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